The viewer always brings part of the meaning.

Half the work happens in the person receiving it. What they have lived, what they were feeling that day, what they happen to notice: the piece is completed differently every time it is encountered. A maker controls the material and not the meaning.

If you make things, this is freeing and slightly humbling. You cannot guarantee the reading, so aim for something true rather than something interpretation-proof. And when someone finds something you did not put there, that is the process working, not a mistake.